1#!/usr/bin/env python
2
3
4#############################################################################
5##
6## Copyright (C) 2013 Riverbank Computing Limited.
7## Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
8## All rights reserved.
9##
10## This file is part of the examples of PyQt.
11##
12## $QT_BEGIN_LICENSE:BSD$
13## You may use this file under the terms of the BSD license as follows:
14##
15## "Redistribution and use in source and binary forms, with or without
16## modification, are permitted provided that the following conditions are
17## met:
18##   * Redistributions of source code must retain the above copyright
19##     notice, this list of conditions and the following disclaimer.
20##   * Redistributions in binary form must reproduce the above copyright
21##     notice, this list of conditions and the following disclaimer in
22##     the documentation and/or other materials provided with the
23##     distribution.
24##   * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor
25##     the names of its contributors may be used to endorse or promote
26##     products derived from this software without specific prior written
27##     permission.
28##
29## THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
30## "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
31## LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
32## A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
33## OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
34## SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
35## LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
36## DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
37## THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
38## (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
39## OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
40## $QT_END_LICENSE$
41##
42#############################################################################
43
44
45from PyQt5.QtCore import QTimer
46from PyQt5.QtWidgets import (QApplication, QDialog, QDialogButtonBox, QLabel,
47        QPushButton, QVBoxLayout)
48from PyQt5.QtNetwork import QHostAddress, QUdpSocket
49
50
51class Sender(QDialog):
52    def __init__(self, parent=None):
53        super(Sender, self).__init__(parent)
54
55        self.statusLabel = QLabel("Ready to broadcast datagrams on port 45454")
56
57        self.startButton = QPushButton("&Start")
58        quitButton = QPushButton("&Quit")
59
60        buttonBox = QDialogButtonBox()
61        buttonBox.addButton(self.startButton, QDialogButtonBox.ActionRole)
62        buttonBox.addButton(quitButton, QDialogButtonBox.RejectRole)
63
64        self.timer = QTimer(self)
65        self.udpSocket = QUdpSocket(self)
66        self.messageNo = 1
67
68        self.startButton.clicked.connect(self.startBroadcasting)
69        quitButton.clicked.connect(self.close)
70        self.timer.timeout.connect(self.broadcastDatagramm)
71
72        mainLayout = QVBoxLayout()
73        mainLayout.addWidget(self.statusLabel)
74        mainLayout.addWidget(buttonBox)
75        self.setLayout(mainLayout)
76
77        self.setWindowTitle("Broadcast Sender")
78
79    def startBroadcasting(self):
80        self.startButton.setEnabled(False)
81        self.timer.start(1000)
82
83    def broadcastDatagramm(self):
84        self.statusLabel.setText("Now broadcasting datagram %d" % self.messageNo)
85        datagram = "Broadcast message %d" % self.messageNo
86        self.udpSocket.writeDatagram(datagram, QHostAddress(QHostAddress.Broadcast), 45454)
87        self.messageNo += 1
88
89
90if __name__ == '__main__':
91
92    import sys
93
94    app = QApplication(sys.argv)
95    sender = Sender()
96    sender.show()
97    sys.exit(sender.exec_())
98